Blackmailed to find a cursed U-boat? Treasure Hunter and thrill seeker Mark Reynolds finds himself embattled against the forces of evil in this debut Action/Horror/Thriller by shipwreck explorer Matthew Smathers. When a secret society threatens his life, Mark Reynolds must enlist the help of dive master Andréa McCawl, and her wisecracking best friend Jack Walker to locate and salvage the wreck of a world war two submarine, impossibly located where no such vessel should exist. Together, they must use their wit and skill to solve a 70yr old mystery, and escape with their lives... but, as tensions escalate and the body count rises, the trio soon begins to realize that the greatest threat lies not from their dangerous associates beside them, but rather beneath them in that Hell Below.